Unlock instant, AI-driven research and patent intelligence for your innovation.

Screw driver unliable to slide off

A screwdriver, not easy technology, applied to screwdrivers, wrenches, wrenches, etc., can solve the problems of bayonet damage, knife edge can not fit, etc., to achieve the effect of not easy to come out and not easy to damage

Inactive Publication Date: 2018-08-21
周扬
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the blade of the screwdriver often cannot fully fit the cross-shaped bayonet of the screw, the bayonet is easily damaged.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Screw driver unliable to slide off
  • Screw driver unliable to slide off
  • Screw driver unliable to slide off

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Examples, see Figure 1 to Figure 4 Shown: a screwdriver that is not easy to slide out, including a handle 10 and a handle 20 whose upper part is fixedly connected to the handle 10 and extends downward.

[0022] Further speaking:

[0023] The lower end of the knife handle 20 is uniformly provided with four openings 21 whose planes all pass through the vertical axis of the knife handle 20 . That is, viewed from the bottom up, the phases of the four openings 21 are 0°, 90°, 180°, and 270°, respectively. Apparently, each opening 21 extends downward to the lower end surface of the handle 20 and extends outward to the peripheral side of the handle 20 . In this embodiment, "outward" refers to a position away from the axis of the handle 20 .

[0024] A paddle 30 is pivotally connected to each opening 21 via a rotating shaft 211 located at the lower portion of the corresponding opening 21 , and the rotating shaft 211 is located at the lower portion of the corresponding paddl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a screw driver unliable to slide off. The screw driver comprises a handle and a stem, wherein the upper part of the stem is fixedly connected with the handle; the stem extendsdownwards; four openings of which the planes all pass through a vertical axial lead of the stem are uniformly formed in the lower end part of the stem; a shifting piece which is pivoted through a rotating shaft is arranged inside each opening; the rotating shaft is positioned at the lower part of a corresponding opening; the rotating shafts are positioned below corresponding shifting pieces; the shifting pieces take the shape of a trapezoid; upper side edges of the shifting pieces take inclined shapes of which the upper ends are positioned below and the inner ends are positioned up; the lowerside edge of the shifting pieces take inclined shapes that the outer ends are positioned up and the inner ends are positioned below; clamping grooves which are concaved inwards are formed in the outerside edges of the upper parts of the shifting pieces; spring rings are arranged in the clamping grooves in a sleeving manner; the stem is screwed with two screw caps; the screw caps are both positioned above the shifting pieces. The screw driver has the advantages that bayonets of screws are not easily damaged.

Description

technical field [0001] The invention relates to the technical field of hardware tools, in particular to a screwdriver that is not easy to slip out. Background technique [0002] A screwdriver is used to tighten or loosen screws. In use, the user must apply sufficient downward pressure. Since the blade of the screwdriver often cannot completely fit with the cross-shaped bayonet of the screw, damage to the bayonet is very easy to occur. Contents of the invention [0003] The purpose of the present invention is to provide a screwdriver that is not easy to slip out, and it has the characteristics that the bayonet socket of the screw is not easy to be damaged. [0004] The technical solution adopted in the present invention is: a screwdriver that is not easy to slide out, including a handle and a knife handle whose upper part is fixedly connected to the handle and extends downwards, [0005] The lower end of the handle is evenly provided with four openings where the planes a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B25B15/02B25B23/16B25B23/00
CPCB25B15/02B25B23/00B25B23/16
Inventor 周扬
Owner 周扬